This project demonstrates how easily you can build your event-driven, event sourcing based application POC in 15 minutes using Tiny Event Sourcing library
This example uses MongoDb as an implementation of the Event store. You can see it in pom.xml:
<dependency>
<groupId>ru.quipy</groupId>
<artifactId>tiny-mongo-event-store-spring-boot-starter</artifactId>
<version>${tiny.es.version}</version>
</dependency>
Thus, you have to run MongoDb in order to test this example. We have docker-compose file in the root. Run following command to start the database:
docker-compose up
To make the application run you can start the main class DemoApplication.
There are a couple of REST endpoints you can try to call.
To create new Project with name "Project" and creator user "Andrey" call:
POST http://localhost:8080/projects/Project?creatorId="Andrey"
As a response you will receive the corresponding event if everything went well:
{
"projectId": "823d4576-5e95-4027-bd9e-63b27086256c",
"title": "Project",
"creatorId": "\"Andrey\"",
"createdAt": 1672078429244,
"id": "e18fb19b-96eb-4706-b030-6cc5f7c23de2",
"name": "PROJECT_CREATED_EVENT",
"version": 1
}
Now lets add some Task with name "Task" to the project. Take the projectId from previous response and perform:
POST http://localhost:8081/projects/823d4576-5e95-4027-bd9e-63b27086256c/tasks/Task
You will receive corresponding TASK_CREATED_EVENT if everything ok
Now lets fetch the current state of the ProjectAggregate:
GET http://localhost:8081/projects/823d4576-5e95-4027-bd9e-63b27086256c
You will receive something like this:
{
"createdAt": 1672078820917,
"updatedAt": 1672078820917,
"projectTitle": "Project",
"creatorId": "Andrey",
"tasks": {
"4b2e75be-19c8-4504-82b1-be3a8775a21a": {
"id": "4b2e75be-19c8-4504-82b1-be3a8775a21a",
"name": "Task",
"tagsAssigned": []
}
},
"projectTags": {},
"id": "823d4576-5e95-4027-bd9e-63b27086256c"
}
This is the project with the only task inside.
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